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<h1>imono</h1><p><span class="helptopic">Convert color image to monochrome</span></p><p>
<strong>out</strong> = <span style="color:red">imono</span>(<strong>im</strong>, <strong>options</strong>) is a greyscale equivalent to the color image <strong>im</strong>.

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<h2>Options</h2>
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  <tr><td style="white-space: nowrap;" class="col1"> 'r601'</td> <td>ITU recommendation 601 (default)</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> 'r709'</td> <td>ITU recommendation 709</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> 'value'</td> <td>HSV value component</td></tr>
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<h2>Notes</h2>
<ul>
  <li>This function returns a greyscale image whether passed a color or a
greyscale image.  If a greyscale image is passed it is simply returned.</li>
  <li>Can convert a color image sequence (HxWx3xN) to a monochrome
sequence (HxWxN).</li>
</ul>
<h2>See also</h2>
<p>
<a href="matlab:doc colorize">colorize</a>, <a href="matlab:doc icolor">icolor</a>, <a href="matlab:doc colorspace">colorspace</a></p>
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